fix Python 2-specific byte conversion

(cherry picked from commit 00f37f3984c35fc4a2ee5687e798c5ca36953d6c)

diff --git a/lib/sqlalchemy/dialects/mysql/base.py b/lib/sqlalchemy/dialects/mysql/base.py
index 689ec12e7a3299edf6c076d886d754a620be4cb5..a52b75f1ab93ab7559078033162fea560e5a6942 100644 (file)
--- a/lib/sqlalchemy/dialects/mysql/base.py
+++ b/lib/sqlalchemy/dialects/mysql/base.py
@@ -873,7 +873,9 @@ class BIT(sqltypes.TypeEngine):
         def process(value):
             if value is not None:
                 v = 0
-                for i in map(ord, value):
+                for i in value:
+                    if not isinstance(i, int):
+                        i = ord(i)  # convert byte to int on Python 2
                     v = v << 8 | i
                 return v
             return value